Jennifer Westfeldt on Being Mad for Jon Hamm, Keeping an Eye on Kelli O'Hara and Playing with the Boys in The Explorers Club

Jennifer Westfeldt dishes about the "goofy, smart fun" of Nell Benjamin's The Explorers Club, what it will take for her to do another musical in New York and why she and Jon Hamm need to catch up on the last season of Mad Men.